Tube tester



March 31, 1931. P L. OBRIEN 1,798,624

TUBE TESTER Filed April 20. 1926 BY P (Q A ATTORNEY Patented Mar. 31,1931 PATENT CFFICE PHILIP L. OBRIEN, F LOWELL, MASSACHUSETTS TUBE TESTERV.application led Apr-i120, 1926. Serial No. 108,205.

I-Ieretofore when tubes have been tested for slow leaks, it has beennecessary to inflate them to some extent and often the extent has beensufficient to cause a bursting of the tube.

The object of my invention is to provide a device in the form of a netwhich may be secured so as to prevent burstingand be immersed in a tankalong with a tube so that imperfections in the tube may be revealedwithout danger of bursting the tube.

For a more detailed description of myinvention reference is to be had tothe accompanying drawing, forming a part hereof, in which Figure l is aside elevation of an inflated tube provided with my protecting net.

Figure 2-is a view showing the net and rings in an extended form.

Figure 3 shows how one ring is passed A through another, and

Figures 4 and 5 are sectional views showing the relation between therings, the net and the tubes, Figure 5 being an enlarged section to moreclearly reveal the structure.

ings, similar reference characters designate similar parts.

My improved tube tester 1 is adapted to be put about an inflated tube 2,as above set forth, to protect it while being tested.

` This tester consists of two rings 3 and 4: which are somewhatresilient as they are made of metal and they are joined by netting 5, asindicated, one ring being at each edge, as shown in Figure 2. When inuse a tube 2 .may be slightly inflated so as to make it so that it canbe handled easily and then the tester is placed, as shown in Figure 3,and thereafter one ring, say the ring 3, the ring when the ring 4 isplaced at an angle as shown Throughout the various views of the draw- 3being sufficiently resilient to permit this broad enough to cover allstructures that 55.

come within the scope of the annexed claims.

Having thus described my invention, what I claim is:

l. A tire tube tester comprising a pair of rings, a netting secured tosaid rings, said rings being of such size that, when parallel, one maynot be passed through the other, but one ring beingl adapted to be sopassed through the other ring by lrelative inclination and bending inorder to secure the netting about the tube.

2. A tire tube tester consistin of an endless net formed of cord,flexible rings to which the edges of the net are secured, said ringsbeing of common diameter and adapted to be sprung one through the otherto interlock the net into a tubular formation.

3. A tire tube tester comprising a pair of rings, a netting connected tosaid rings, said rings being of such size that, when parallel, 5 one maynot be passed through the other, but one of said rings being 'flexibleso that Lit can be passed through the other ring by relativeinclinationy and bending in order to secure the netting about the tube.l.

In testimony whereof, I have hereunto set my hand and seal this 6th dayof April, 1925.

PHILIP L. OBRIEN.

in Figure 3, is passed through the ring 4 and thereafter the tube 2 isfurther inflated after which the net, rings and tube may be tested inthe usual way while fully protected by the netting 5 whichis securedsnug against it by the inflation of the tube while held in the netting.After the tube has been duly tested by a-reverse operation, the nettingmay 5 put in a tank 6 with water 7 and the tube'

